A light wire 1.75 m long has a cross-sectional area of 2.3 mm². It is hung vertically and stretches 0.31 mm when a 10.0 kg block is attached to it. Find the -2 stress, the strain and the Young's modulus for the wire. Take the acceleration due to gravity to be 9.80 ms' Give your answers correct to two significant figures. Stress = 固国EMPa. Strain = Young's modulus = GPa.

A light wire 1.75 m long has a cross-sectional area of 2.3 mm². It is hung vertically and stretches 0.31 mm when a 10.0 kg block is attached to it. Find the -2 stress, the strain and the Young's modulus for the wire. Take the acceleration due to gravity to be 9.80 ms' Give your answers correct to two significant figures. Stress = 固国EMPa. Strain = Young's modulus = GPa.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

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A light wire 1.75 m long has a cross-sectional area of 2.3 mm². It is hung vertically and stretches 0.31 mm when a 10.0 kg block is attached to it. Find the
stress, the strain and the Young's modulus for the wire. Take the acceleration due to gravity to be 9.80 ms
Give your answers correct to two significant figures.
Stress =
MPa.
Strain =
Young's modulus =
GPa.

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